CN109403202A - A kind of more block bent caps and its construction method - Google Patents
A kind of more block bent caps and its construction method Download PDFInfo
- Publication number
- CN109403202A CN109403202A CN201811401707.8A CN201811401707A CN109403202A CN 109403202 A CN109403202 A CN 109403202A CN 201811401707 A CN201811401707 A CN 201811401707A CN 109403202 A CN109403202 A CN 109403202A
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- China
- Prior art keywords
- block
- small box
- box girder
- bent
- bent cap
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of more block bent caps and its construction methods, belong to bridge structure technical field.It include: bent cap, the lower end surface of bent cap is connected with several bridge piers, and the upper surface of bent cap is provided with both sides block and several middle blocks, and both sides block is arranged in the both sides of the edge of bent cap upper surface, and several middle blocks are between the block of both sides；Small box girder bridge, the lower end surface of small box girder bridge and the upper surface of bent cap connect, small box girder bridge includes several small box girders and several crossbeams, a crossbeam is connected between every two adjacent small box girders of small box girder width direction arrangement, both sides block is arranged in the two sides of two small box girders at small box girder bridge edge, and each middle block is arranged in the side of the small box girder in the middle part of small box girder bridge.A kind of more block bent caps provided by the invention and its construction method, strengthen the lateral confinement to small box girder, reduce the risk of geological process whereabouts beam, realize setting up defences to earthquake for more levels.
Description
Technical field
The present invention relates to bridge structure technical field, it is specifically related to a kind of more block bent caps and its construction method.
Background technique
Bent cap is referred in bridge pier (platform) or the crossbeam of setting armored concrete or rare-reinforcement concrete on campshed, main work
With being supporting bridge superstructure, and whole load is passed into substructure.Two side bumper blocks would generally be set on bent cap
Enhance bent cap to the lateral confinement of small box girder.However, side bumper block, ground is only arranged in highly seismic region and prefabricated bridge
The risk that shake acts on whereabouts beam is larger.
Summary of the invention
For the above-mentioned problems in the prior art, it is desirable to provide a kind of more block bent caps and its construction method are reinforced
Bent cap reduces the risk of geological process whereabouts beam to the lateral confinement of small box girder.
Specific technical solution is as follows:
A kind of more block bent caps, comprising:
Bent cap, the lower end surface of bent cap are connected with several bridge piers, and the upper surface of bent cap is provided with both sides block and several middle gears
Block, both sides block are arranged in the both sides of the edge of bent cap upper surface, and several middle blocks are between the block of both sides；
The upper surface of small box girder bridge, the lower end surface of small box girder bridge and bent cap connects, small box girder bridge include several small box girders and
Several crossbeams, are connected with a crossbeam between every two adjacent small box girders of small box girder width direction arrangement, and both sides block distinguishes cloth
It sets in the two sides of two small box girders at small box girder bridge edge, each middle block is arranged in the small box girder in the middle part of small box girder bridge
Side.
It in a kind of above-mentioned more block bent caps and its construction method, also has the feature that, bent cap concrete grade is high
In C40, preferably C60 (strength grade be C60 and its more than coagulation penus high-strength concrete).
In a kind of above-mentioned more block bent caps and its construction method, also have the feature that, middle block and its arrangement of reinforcement exist
E1 geological process is destroyed under (engineering ground return period shorter geological process corresponds to first order fortification).
In a kind of above-mentioned more block bent caps and its construction method, also have the feature that, side bumper block and its arrangement of reinforcement exist
E2 geological process is not destroyed under (engineering ground return period longer geological process corresponds to second level fortification).
It in a kind of above-mentioned more block bent caps and its construction method, also has the feature that, middle block and is arranged in this
The gap between crossbeam above middle block is less than or equal to 3cm, preferably 2cm.
It in a kind of above-mentioned more block bent caps and its construction method, also has the feature that, side bumper block and is arranged in this
The gap between small box girder above side bumper block is less than or equal to 10cm, preferably 3cm.
In a kind of above-mentioned more block bent caps and its construction method, also have the feature that, each middle block and crossbeam
Gap location need to be provided with a rubber cushion blocks, the thickness of rubber cushion blocks is preferably 2cm, and rubber cushion blocks pass through epoxy construction glue
In the upper surface of middle block.
It in a kind of above-mentioned more block bent caps and its construction method, also has the feature that, each side bumper block and small case
The gap location of beam need to be provided with a rubber cushion blocks, and the thickness of rubber cushion blocks is preferably 2cm, and rubber cushion blocks pass through epoxy construction gluing
It is affixed on the upper surface of side bumper block.
In a kind of above-mentioned more block bent caps and its construction method, also have the feature that, small box girder bridge is along its width
The symmetrical setting in direction.
A kind of construction method of more block bent caps includes:
Step 1: binding bridge pier reinforcing bar pours bridge pier concrete；
Step 2: rotary ligating cover beam steel pours wherein middle block and side bumper root tuber obtain required reinforcing bar number according to seismic Calculation
Bent cap concrete；
Step 3: when bent cap concrete reaches prescribed strength, tensioning bent cap partial prestressing reinforcing bar, in middle block and
Rubber cushion blocks are pasted at side bumper block；
Step 4: small box girder is lifted to bent cap, remaining deformed bar of tensioning bent cap.
Step 5: the construction of railing, the accessory structure of bridge such as mat formation is carried out.
The good effect of above-mentioned technical proposal is:
A kind of more block bent caps provided by the invention and its construction method are strengthened by the way that multiple blocks are arranged on bent cap
Bent cap reduces the risk of geological process whereabouts beam to the lateral confinement of small box girder；Middle block constructional reinforcement is weaker, normally makes
The deformation such as temperature, shrinkage and creep of small box girder can be constrained with state, can be cut up under E1 geological process, play the work of energy consumption
With, and then protect other capacity protection components；Side bumper block constructional reinforcement is stronger, and small box girder can be constrained in normal operating condition
The deformation such as temperature, shrinkage and creep, will not be cut up under E2 geological process, play anti-fall beam action；The present invention passes through middle gear
The setting of block and side bumper block realizes that more levels are set up defences, and meets the mark of providing fortification against earthquakes of " small earthquakes are not bad, medium ones can be repaired, and large ones cannot fall "
It is quasi-.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the embodiment of more block bent caps of the invention.
In attached drawing: 1, small box girder bridge；11, small box girder；12, crossbeam；2, bent cap；21, middle block；22, side bumper block；3, bridge
Pier.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing 1 is applied to be specifically addressed a kind of more block bent caps provided by the invention and its construction method.
Fig. 1 is a kind of overall structure diagram of the embodiment of more block bent caps of the invention, and in the present embodiment, this is more
Block bent cap and its construction method mainly include small box girder bridge 1, small box girder 11, crossbeam 12, bent cap 2, middle block 21, side bumper block
22, bridge pier 3.
The lower end surface of bent cap 2 is connected with several bridge piers 3, and the upper surface of bent cap 2 is provided with both sides block 22 and several middle gears
Block 21, middle block 21 and side bumper block 22 are used to carry out lateral confinement to small box girder 11, and the setting of more blocks can reduce bridge and exist
The risk of beam is fallen during earthquake, both sides block 22 is arranged in the both sides of the edge of 2 upper surface of bent cap, several middle blocks 21
Between both sides block 22.The lower end surface of small box girder bridge 1 is connect with the upper surface of bent cap 2, and small box girder bridge 1 includes several small casees
Beam 11 and several crossbeams 12 are connected with a crossbeam 12 between every two adjacent small box girders 11 of 11 width direction of small box girder arrangement,
Both sides block 22 is arranged in the two sides of two small box girders 11 at 1 edge of small box girder bridge, and each middle block 21 is arranged in small
The side of one small box girder 11 at 1 middle part of box girder bridge.
In a preferred embodiment, as shown in Figure 1,2 concrete grade of bent cap is higher than C40, preferably C60, lid
Beam 2 is poured using strong concrete, to enhance the shock strength of bent cap 2.
In a preferred embodiment, as shown in Figure 1, the construction of middle block 21 and its arrangement of reinforcement quilt under E1 geological process
It destroys, to play the role of energy consumption, and then protects other capacity protection components.
In a preferred embodiment, as shown in Figure 1, side bumper block 22 construction and its arrangement of reinforcement under E2 geological process not
It is destroyed, the arrangement of reinforcement of side bumper block 22 is stronger, and temperature, shrinkage and creep of small box girder 11 etc. can be constrained in normal operating condition and become
Shape plays anti-fall beam action under E2 geological process.
In a preferred embodiment, as shown in Figure 1, middle block 21 setting there are two, middle block 21 be arranged in
Gap in this between crossbeam 12 of 21 top of block is less than or equal to 3cm, preferably 2cm.
In a preferred embodiment, as shown in Figure 1, side bumper block 22 setting there are two, side bumper block 22 be arranged in
Gap between the small box girder 11 of 22 top of side bumper block is less than or equal to 10cm, preferably 3cm.
In a preferred embodiment, as shown in Figure 1, the gap location of each middle block 21 and crossbeam 12 need to be provided with
One rubber cushion blocks, the thickness of rubber cushion blocks are preferably 2cm, and rubber cushion blocks are pasted onto the upper end of middle block 21 by epoxy structural rubber
Face, for mitigating the vibration of crossbeam 12.
In a preferred embodiment, as shown in Figure 1, the gap location of each side bumper block 22 and small box girder 11 needs to be arranged
There are a rubber cushion blocks, the thickness of rubber cushion blocks is preferably 2cm, and rubber cushion blocks are pasted on the upper of side bumper block 22 by epoxy structural rubber
End face, for mitigating the vibration of small box girder 11.
In a preferred embodiment, as shown in Figure 1, small box girder bridge 1 is along the symmetrical setting of its width direction,
Wherein small box girder 11 during erection along its width direction from centre to both sides bilateral symmetry erection construction.
Hereinafter, being illustrated with a kind of specific embodiment, it should be pointed out that described in following implementation it
Structure, technique, selection are only to illustrate the feasibility of embodiment, the intention of there is no restriction the scope of the present invention.
A kind of more block bent caps provided in this embodiment, bent cap 2 are poured using C60 concrete, 2 upper surface of bent cap
There are four block, four blocks are symmetrical arranged for setting, including two side bumper blocks 22 and two middle blocks 21, middle block 21 with
It is arranged in the gap that 2cm is provided between the structure of 21 top of block, side bumper block 22 and the knot for being arranged in 22 top of side bumper block
The gap of 3cm is provided between structure, the upper surface of each block is provided with the rubber cushion blocks of 2cm thickness.Wherein in each gear
The construction of block 21 and its arrangement of reinforcement are destroyed under E1 geological process in guaranteeing in the design of bulk strength, and side bumper block 22 constructs and its matches
Muscle is not destroyed under E2 geological process.
A kind of construction method of more block bent caps provided in this embodiment binds bridge pier reinforcing bar, pours bridge pier concrete；It ties up
Bent cap reinforcing bar is pricked, wherein middle block and side bumper root tuber obtain reinforcing bar number according to seismic Calculation, pours bent cap concrete；To bent cap coagulation
When soil reaches prescribed strength, tensioning bent cap partial prestressing reinforcing bar pastes rubber cushion blocks at middle block and side bumper block；It will be small
Box beam is lifted to bent cap, remaining deformed bar of tensioning bent cap；Finally carry out railing, the accessory structure of bridge such as mat formation
Construction.
More block bent caps strengthen the lateral confinement to small box girder, reduce the risk of geological process whereabouts beam, realize
The setting up defences to earthquake of more levels.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (8)
1. a kind of more block bent caps characterized by comprising
Bent cap, the lower end surface of the bent cap are connected with several bridge piers, and the upper surface of the bent cap is provided with both sides block and several
Middle block, the two side bumper blocks are arranged in the both sides of the edge of the bent cap upper surface, and several middle blocks are located at two institutes
It states between side bumper block；
The lower end surface of small box girder bridge, the small box girder bridge is connect with the upper surface of the bent cap, and the small box girder bridge includes several
Small box girder and several crossbeams are connected with described in one between the every two adjacent small box girders of small box girder width direction arrangement
Crossbeam, the two side bumper blocks are arranged in the two sides of two small box girders at small box girder bridge edge, each middle gear
Block is arranged in the side of the small box girder in the middle part of the small box girder bridge.
2. a kind of more block bent caps according to claim 1, which is characterized in that the bent cap concrete grade is higher than C40.
3. a kind of more block bent caps according to claim 1, which is characterized in that the middle block and be arranged in this it is described in
The gap between the crossbeam above block is less than or equal to 3cm.
4. a kind of more block bent caps according to claim 1, which is characterized in that the side bumper block and be arranged in the side
The gap between the small box girder above block is less than or equal to 10cm.
5. a kind of more block bent caps according to claim 3, which is characterized in that each middle block and the crossbeam
Gap location need to be provided with a rubber cushion blocks, and the rubber cushion blocks are pasted onto the upper surface of the middle block by epoxy structural rubber.
6. a kind of more block bent caps according to claim 4, which is characterized in that each side bumper block and the small box girder
Gap location need to be provided with a rubber cushion blocks, the rubber cushion blocks are pasted on the upper end of the side bumper block by epoxy structural rubber
Face.
7. a kind of more block bent caps according to claim 1, which is characterized in that the small box girder bridge is in along its width direction
It is symmetrical set.
8. a kind of construction method of more block bent caps, which is characterized in that including described in any one of claim 1 to 7 one
The more block bent caps of kind:
Step 1: binding the bridge pier reinforcing bar, pours the bridge pier concrete；
Step 2: binding the bent cap reinforcing bar, wherein the middle block and the side bumper root tuber obtained according to seismic Calculation it is required
Reinforcing bar number pours the bent cap concrete；
Step 3: when the bent cap concrete reaches prescribed strength, the partial prestressing reinforcing bar of bent cap described in tensioning, described
Rubber cushion blocks are pasted at middle block and the side bumper block；
Step 4: the small box girder bridge crane is filled on the bent cap, remaining deformed bar of bent cap described in tensioning.
Step 5: the construction of railing, the accessory structure of bridge such as mat formation is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401707.8A CN109403202A (en) | 2018-11-22 | 2018-11-22 | A kind of more block bent caps and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401707.8A CN109403202A (en) | 2018-11-22 | 2018-11-22 | A kind of more block bent caps and its construction method |
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| Publication Number | Publication Date |
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| CN109403202A true CN109403202A (en) | 2019-03-01 |
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ID=65474683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811401707.8A Pending CN109403202A (en) | 2018-11-22 | 2018-11-22 | A kind of more block bent caps and its construction method |
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| CN (1) | CN109403202A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983948A (en) * | 2019-10-31 | 2020-04-10 | 上海市政工程设计研究总院（集团）有限公司 | Pier capping beam capable of preventing beam body from overturning and using method thereof |
| CN113512930A (en) * | 2021-07-05 | 2021-10-19 | 山西省交通科技研发有限公司 | Transverse reinforcing structure and construction method for assembled small box girder |
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| JP2001115419A (en) * | 1999-10-14 | 2001-04-24 | Bridgestone Corp | Anchor bar |
| CN202755299U (en) * | 2012-08-27 | 2013-02-27 | 上海市城市建设设计研究总院 | Anti-shock check block structure for transverse bridge direction compound-type pier |
| CN203034352U (en) * | 2013-01-21 | 2013-07-03 | 山西省交通规划勘察设计院 | Fabricated bridge pier and abutment anti-seismic device |
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| CN106801378A (en) * | 2017-01-22 | 2017-06-06 | 重庆交通大学 | Position limiting structure based on external prestressing girder falling under geological process |
| CN206570673U (en) * | 2017-03-02 | 2017-10-20 | 西南交通大学 | A kind of replaceable embedded rebar concrete anti-earthquake baffle block device |
| CN108277733A (en) * | 2018-01-31 | 2018-07-13 | 重庆交通大学 | The small fabricated box girder bridge and preparation method thereof that hinge seam deterioration influences can be resisted |
| CN209555752U (en) * | 2018-11-22 | 2019-10-29 | 上海市政交通设计研究院有限公司 | A kind of more block bent caps |
-
2018
- 2018-11-22 CN CN201811401707.8A patent/CN109403202A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115419A (en) * | 1999-10-14 | 2001-04-24 | Bridgestone Corp | Anchor bar |
| CN202755299U (en) * | 2012-08-27 | 2013-02-27 | 上海市城市建设设计研究总院 | Anti-shock check block structure for transverse bridge direction compound-type pier |
| CN203034352U (en) * | 2013-01-21 | 2013-07-03 | 山西省交通规划勘察设计院 | Fabricated bridge pier and abutment anti-seismic device |
| CN204000572U (en) * | 2014-06-30 | 2014-12-10 | 同济大学 | Friction-type steel concrete Antivibration block |
| CN106801378A (en) * | 2017-01-22 | 2017-06-06 | 重庆交通大学 | Position limiting structure based on external prestressing girder falling under geological process |
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| CN209555752U (en) * | 2018-11-22 | 2019-10-29 | 上海市政交通设计研究院有限公司 | A kind of more block bent caps |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983948A (en) * | 2019-10-31 | 2020-04-10 | 上海市政工程设计研究总院（集团）有限公司 | Pier capping beam capable of preventing beam body from overturning and using method thereof |
| CN113512930A (en) * | 2021-07-05 | 2021-10-19 | 山西省交通科技研发有限公司 | Transverse reinforcing structure and construction method for assembled small box girder |
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